You shouldn't access files in WSL using windows, but the other way around it's absolutely ok.

So if my projects are at C:/Development/Projects/...

Then I just open /mnt/c/Development/Projects/... on WSL

I haven't had any permission problems, not even once.

Same for Docker for Windows. It uses Hyper-V + some network disk sharing magic, which makes directory mounts into docker containers work great. So sometimes, like, when I need to debug a non-cross-platform linux program. (WSL doesn't handle process forking well, so some debuggers, like Go Delve don't work) I just do something like

docker run -v C:/Development/Projects/MyProject:/mnt/MyProject -it ubuntu /bin/bash